Optimum Nutrition (ON)Show Filters
Optimum Nutrition, Inc. (ON) is part of the Glanbia global nutrition group and has been setting the Gold Standard in sports nutrition for more than 30 years – helping performance focused athletes achieve their goals.
Company Owned & Operated Manufacturing
With state-of-the-art production facilities in Aurora, Illinois; Walterboro, South Carolina and Sunrise, Florida, ON is one of the few sports nutrition companies to manufacture in every product category. From the very beginning in 1986, Optimum Nutrition has always taken a hands-on approach to maintaining the very highest standards of quality.
Before a single machine is turned on in our manufacturing facilities, ON procurement professionals carefully select the most premium raw materials. A Certificate of Analysis is required for every ingredient, which is then tested and retested for compliance. Quality assurance performs daily inspections of our current Good Manufacturing Practices (cGMPs) compliant facilities, which are GMP Registered and GMP for Sport by NSF.
History of Innovation
In addition to making Gold Standard 100% Whey, the worlds’ best-selling whey protein, ON created the slowly digesting protein category with Gold Standard 100% Casein. ON also created the anytime energy category, which remains dominated by Essential Amino Energy.
ON’s strict ingredients selection, quality control, lab testing and manufacturing processes are all done for one reason: to provide you with the highest quality sports nutrition products available. Our company was founded with a mission to bring consistent quality to the marketplace, and we are constantly working on setting even higher standards.
Where You Can Find Us
Our products can be found throughout the United States in nearly 10,000 specialty retail stores, gyms and fitness centers as well as major grocery chains and drug stores. ON products are also distributed in over 70 countries worldwide.
For a complete listing of Optimum Nutrition products, visit the Products section of this website or request a free catalog.